Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400
The AirTAC Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400 is a genuine double-acting ISO 15552 profile cylinder with a Ø160mm bore, 400mm stroke and a built-in spring-applied, air-released mechanical lock in the front cover — it holds the load at the extended (rod-out) stroke end even when air is lost.
- BoreØ160 mm
- Stroke400 mm
- Port sizeG3/4
- Lock positionFront cover
- Rod threadM36×2
- UnlockAir + manual
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400
The AirTAC SAILF160X400 is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released mechanical lock housed in the front cover. Because the lock engages when the piston reaches the extended stroke end, it securely holds the rod-out position without requiring continuous live air pressure. Fitted with a 40mm carbon steel rod and a 3/4 PT port, this 160mm bore unit generates 14074N of push force at 0.7MPa, making it well suited for heavy load control.
Unlike a standard SAI cylinder, the SAILF provides genuine power-loss safety through its static holding brake. The variable air cushion at the locker end is notably shorter at 28mm compared to the 50mm cushion on the free end, ensuring compact deceleration without interfering with the locking mechanism. For position monitoring, the extruded aluminum barrel includes dual sensor grooves compatible with AirTAC CMSE reed and DMSE electronic sensors when a magnet is specified.
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400 Technical Specifications
| Model | Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400 |
|---|---|
| Series | SAIL ISO 15552 cylinder with lock |
| Bore size | Ø160 mm |
| Stroke | 400 mm |
| Acting type | Double acting, with lock |
| Port size | G3/4 |
| Rod thread | M36×2 |
| Lock type | Spring-applied, air-released (front cover) |
|---|---|
| Unlock | Automatic (air) & manual |
| Operating pressure | 0.15 – 1.0 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable (50 mm free end / 28 mm lock end) |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAIL datasheet (ISO 15552). Confirm against the product label before installation. Port options: PT / G.
How the Lock Holds
The lock is spring-applied and air-released: a spring drives a lock pin into the rod when the release air is removed, so the load is held at the extended (rod-out) stroke end without live pressure. Supply air to the release port to unlock automatically, or use the manual release lever.
The lock engages only when the piston reaches the stroke terminal on the front-cover side — it is a static end-of-stroke hold, not a mid-stroke clamp and not a moving-rod brake. For locking at any position along the stroke, choose a BSAI clamp-lock instead.
Theoretical Output Force (Ø160mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 10053 N | 9425 N |
| 0.7 MPa | 14074 N | — |
| Max (@1.0 MPa) | 2050 kgf | |
Cylinder thrust is separate from the lock's holding capability. Actual usable force is lower than theoretical due to friction and back-pressure — size with a margin.
Where the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400 Is Used
Vertical Lift Holding
Secures elevated heavy platforms in the extended position during a power loss, preventing sudden drops until air is restored to the release port.
Heavy Clamp Retention
Maintains high-pressure clamping force at the rod-out stroke end on large fixtures without consuming continuous compressed air.
Machine Safety Guard
Locks heavy safety doors or machine gates in the open, extended position to protect operators during maintenance access.
Is the Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400 the Right Lock Cylinder?
Choose this 160mm bore model when an application demands high thrust and secure holding at the fully extended position. If the requirement is holding the retracted rod-in end instead, the SAILB160X400 is the correct match. For operations needing to clamp and hold the load at an arbitrary mid-stroke point rather than the stroke terminal, the BSAI clamp-lock cylinder is the appropriate choice.
Remember that the SAIL lock is a static holding device that engages after the cylinder stops, not a dynamic brake for a moving rod. Avoid using fast-exhaust valves with this cylinder; instead, select an independent-exhaust solenoid valve, as back-pressure on the locker side can unintentionally release the lock. For any safety-critical lifting application, always add an independent mechanical safety measure. Given the 400mm stroke on this large bore, utilizing the full ISO 15552 mounting interface set such as TC or LB brackets alongside external side-load guides is highly recommended to prevent rod binding.
Quick checklist
- ✓ Hold needed at the extended (rod-out) end?
- ✓ Or lock anywhere → use BSAI
- ✓ Independent-exhaust valve fitted
- ✓ Port/thread type (PT/G)
- ✓ Extra safety measure for people
Airtac SAILF Front Locking Pneumatic Cylinder SAILF160X400 FAQ
The 160mm bore generates a push force of 14074N at 0.7MPa and 18095N at 0.9MPa. The pull force is 9425N at 0.7MPa due to the 40mm carbon steel rod.
The lock is spring-applied and air-released. It engages automatically when the rod reaches the extended stroke end, holding the load statically without live pressure. To unlock, supply air to the release port or use the manual release lever.
Related AirTAC Lock & Standard Cylinders
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